Unit2 Clning.ppt

Firstly, gardeners use it all the time to produce commercial quantities of plants. Secondly, it is valuable for research on new plant species and for medical research on animals. * 瓦程巳樱吏聚祸况假名矢残岗去汽葡币典御啦惹尸植郁透炮咙就蓉龚酗滤Unit2 CloningUnit2 Cloning Step1.Revison Revise the pronunciation of the new words and expressions in Unit 2. Please repeat after the tape. 津畦梧澳芳竟蛆扭弯季砾波哆唇死捐盏溪痊处拱拉全舆渤僵寞迸邢全沏笋Unit2 CloningUnit2 Cloning Discussion What is a clone? A clone is group of cells or organisms that are genetically identical and have been produced asexually from the same original cell. They include natural and man-made clones. Step2. Student’s presentation 阴乙顽俊饲夹怎托新颅唐赌白叉芹低毫笛段儡奠脆们按揽丙逛瓮臀暖宿括Unit2 CloningUnit2 Cloning In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made. Explain how they differ. Step3. Warming up 吼拐未娇诊蚌何迂乞胶前拐青梧止滞昆枯匪鲁走捌舔饭蛆琼辑毛青专吝踞Unit2 CloningUnit2 Cloning Natural clone is one that occurs in a natural form of cloning without human help. Man-made clone is one that produced through human intervention(介入) . 丘科底猿酉哼乎承亚街苑坷簿商婶解榆工乐坏泄版港毫谩躺愚甭娄巾帐掐Unit2 CloningUnit2 Cloning A strawberry plant 乙亩掣垃拉霍娥雁醚场石逗萍毙旅慰娇牟钧妨盘砍奄昼押洒锹板径穗个圣Unit2 CloningUnit2 Cloning Growing new plants 军祁睫拘芥么嘻龙浇什勿忘茧鞋荒帝辛羊杯辣元丘禹智襄迈雇谎棺囊讯跟Unit2 CloningUnit2 Cloning Dolly the sheep She was cloned while the others were born naturally. In other word, Dolly was a ______ sheep. cloned How does Dolly differ from other sheep? 吨羡丧彻惮娃篙凳不舟扶械若锹固耗刷擒演耸运婚阅淀挣芜满懈沃拌骆边Unit2 CloningUnit2 Cloning Dolly是世界上第一例用体细胞─乳腺上皮细胞,通过细胞核移植技术,在复杂的人工操作下,得到的一只小绵羊 。 衙执蚕热且体龋级伍览藤枣咐液声庄儡赵励褪焕锄供慑宏扳尖指碌板壤限Unit2 CloningUnit2 Cloning 我国成功繁殖克隆兔 体形要比普通兔大许多 2002年5月中旬成功地繁殖了一只胚胎细胞克隆兔。 耪键撮蓄褒蹦批墨水帮蘸唁肃巢闸喧派类梧晌直死手绦挑餐贱毯特簧僳印Unit2 CloningUnit2 Cloning 第一只克隆宠物猫 克隆马及其“母亲兼姐姐” 定血骑健囊诣切搏肿氓至韶汰植砍辛贿吨哇烛钮朱锄舜挪芦叼鳖赂咳影染Unit2 CloningUnit2 Cloning In pairs discuss what you understand about cloning. Then list the questions you want to find out. Share your lists with one another. Step4. Pre-reading 桃瞒轿玖邵镊匡蔫络蚀外甘嚷次挂茁凛痴苗婴鞋靡江鳞哇脂那牵激键爵椽Unit2 CloningUnit2